Light micrograph of a section through the cortex of an adrenal It is divided into three sections, two of which are seen here. The middle section, the zona fasciculata (lighter, bottom right), makes glucocorticoid hormones such as cortisol. The zona reticularis (darker) is the innermost layer. It produces androgen sex hormones. There are two adrenal glands, one on top of each kidney. Magnification: x100 when printed at 15cm tall.